Phy 1010 -Chapter 4 Questions 1) A person pulls a block across a rough horizontal surface...
A person pulls a block across a rough horizontal surface at a constant speed by applying a force F at a slight angle as shown. A free-body force diagram is drawn for the block. The arrows in the diagram correctly indicate the directions, but not necessarily the magnitudes of the various forces on the block A student states that F fk and Fv W (here W stands for weight, which we call Fc) since the velocity is constant and thus...
A 20 N block is being pushed across a horizontal table by an 18 N force. If the coefficient of kinetic friction between the block and the table is 0.4, find the acceleration of the block (A.) 0.5 m/s B1.0 m/s (C) 5 m/s (D.) 7.5 m/s (E.) 9 m/s If all the forces acting on an object are balanced so that the net force is zero, then (A) The object must be at rest. (B) The object's speed will...
1. A block with weight W = 30 N is on a flat horizontal surface. You pull to the right with a force F = 16 N. There is gravity present and the coefficient of friction is static = 0.4 and kinetic - 0.25. You are also pulling straight up with an applied force of 12 N. Now what are: The normal force N-_ the frictional force f- the net force on the block Foot and acceleration a = 2....
don a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 2 s, how long i A) 586 mB) 293 m C) 1130 m D) 147 m 2) Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of 5.3 N, and the other child pulls to the east with a force of 6.3 N. What is the magnitude...